v3.24.3
Segment Information - Revenue from External Customers (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Revenue from External Customer [Line Items]        
Premiums $ 11,436 $ 10,998 $ 34,493 $ 33,062
Total revenues from external customers 63,609 48,727 180,776 143,275
Pharmacy revenues        
Revenue from External Customer [Line Items]        
Revenue from contract with customer 48,284 34,531 135,421 100,639
Service        
Revenue from External Customer [Line Items]        
Revenue from contract with customer 3,889 3,198 10,862 9,574
Evernorth Health Services        
Revenue from External Customer [Line Items]        
Total revenues from external customers 51,552 37,230 144,689 108,462
Cigna Healthcare        
Revenue from External Customer [Line Items]        
Total revenues from external customers 11,919 11,426 35,752 34,581
Other Operations        
Revenue from External Customer [Line Items]        
Total revenues from external customers 137 71 333 232
Intersegment Eliminations        
Revenue from External Customer [Line Items]        
Premiums 18 17 73 51
Total revenues from external customers (2,342) (2,439) (7,227) (7,486)
Intersegment Eliminations | Pharmacy revenues        
Revenue from External Customer [Line Items]        
Revenue from contract with customer (982) (1,109) (3,238) (3,890)
Intersegment Eliminations | Service        
Revenue from External Customer [Line Items]        
Revenue from contract with customer (1,378) (1,347) (4,062) (3,647)
Intersegment Eliminations | Evernorth Health Services        
Revenue from External Customer [Line Items]        
Total revenues from external customers (1,045) (1,303) (3,558) (4,343)
Intersegment Eliminations | Cigna Healthcare        
Revenue from External Customer [Line Items]        
Total revenues from external customers (1,279) (1,136) (3,606) (3,143)
Intersegment Eliminations | Other Operations        
Revenue from External Customer [Line Items]        
Total revenues from external customers (18) 0 (63) 0
Operating Segments | Other revenues        
Revenue from External Customer [Line Items]        
Revenue from contract with customer 267 43 509 172
Operating Segments | Evernorth Health Services | Pharmacy revenues        
Revenue from External Customer [Line Items]        
Revenue from contract with customer 49,252 35,640 138,612 104,529
Operating Segments | Evernorth Health Services | Network revenues        
Revenue from External Customer [Line Items]        
Revenue from contract with customer 27,353 16,926 76,795 49,080
Operating Segments | Evernorth Health Services | Home delivery and specialty revenues        
Revenue from External Customer [Line Items]        
Revenue from contract with customer 18,909 16,324 53,384 48,943
Operating Segments | Evernorth Health Services | Other revenues        
Revenue from External Customer [Line Items]        
Revenue from contract with customer 2,990 2,390 8,433 6,506
Operating Segments | Evernorth Health Services | Fees        
Revenue from External Customer [Line Items]        
Revenue from contract with customer 3,314 2,862 9,508 8,199
Operating Segments | Cigna Healthcare        
Revenue from External Customer [Line Items]        
Premiums 11,296 10,911 34,135 32,786
Operating Segments | Cigna Healthcare | Fees        
Revenue from External Customer [Line Items]        
Revenue from contract with customer 1,671 1,639 4,850 4,847
Operating Segments | Cigna Healthcare | U.S. Healthcare        
Revenue from External Customer [Line Items]        
Premiums 10,385 10,077 31,448 30,346
Operating Segments | Cigna Healthcare | U.S. Healthcare | Employer insured        
Revenue from External Customer [Line Items]        
Premiums 4,382 4,144 13,125 12,315
Operating Segments | Cigna Healthcare | U.S. Healthcare | Medicare Advantage        
Revenue from External Customer [Line Items]        
Premiums 2,110 2,189 6,604 6,605
Operating Segments | Cigna Healthcare | U.S. Healthcare | Stop loss        
Revenue from External Customer [Line Items]        
Premiums 1,689 1,548 5,022 4,565
Operating Segments | Cigna Healthcare | U.S. Healthcare | Individual and Family Plans        
Revenue from External Customer [Line Items]        
Premiums 1,001 1,269 3,016 3,770
Operating Segments | Cigna Healthcare | U.S. Healthcare | Other        
Revenue from External Customer [Line Items]        
Premiums 1,203 927 3,681 3,091
Operating Segments | Cigna Healthcare | International Health        
Revenue from External Customer [Line Items]        
Premiums 911 834 2,687 2,440
Operating Segments | Other Operations        
Revenue from External Customer [Line Items]        
Premiums 122 70 285 225
Operating Segments | Other Operations | Pharmacy revenues        
Revenue from External Customer [Line Items]        
Revenue from contract with customer 14 0 47 0
Operating Segments | Other Operations | Fees        
Revenue from External Customer [Line Items]        
Revenue from contract with customer $ 15 $ 1 $ 57 $ 3